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What is the purpose of the transducer damping material and the matching layer? What are the...

What is the purpose of the transducer damping material and the matching layer?

What are the methods you use to determine how much a 3.5-MHz pulse will be attenuated after passing through 2 cm of soft tissue

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Answer #1

Answer 1: The purpose of the transducer damping material is to decrease the amount of reflection at the interface of piezoelectric crystal/system and the matching layer increase the transmission of the waves generated by the transducer and PZT system.

Answer 2: Using Ultrasonic Attenuation Estimate method we can determine the attenuation of a pulse passing through a soft tissue:

given,

pulse frequency = 3.5 MHz

soft tissue size = 2 cm

the formula of this method is:

Attenuation (in dB) equals to:

path length = tissue size (in cm) = 2

thus,

Anttenuatio (dB) = 0.5*3.5*2 = 3.5 dB

Upvote, if the answer was helpful. Have a nice and safe day.

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